Update the tvOS for your managed Apple TV's

Select the group of Apple TV's that you wish to update

Click on OS Update from the header menu

This screen will show you which devices have updates available.

Check off which Apple TV's you wish to update and click the +Schedule button

Select to update now or set a start date and end date for running the OS update.

To view the status of the update click on the calendar and expand the date the update is scheduled to run